Bug 1654556 - Log also "failed the samesite tests" cookie rejection reason, r=baku

Differential Revision: https://phabricator.services.mozilla.com/D84555

netwerk/cookie/CookieService.cpp

@@ -1168,6 +1168,13 @@ bool CookieService::CanSetCookie(
       aIsForeignAndNotAddon) {
     COOKIE_LOGFAILURE(SET_COOKIE, aHostURI, savedCookieHeader,
                       "failed the samesite tests");
+
+    CookieLogging::LogMessageToConsole(
+        aCRC, aHostURI, nsIScriptError::warningFlag, CONSOLE_SAMESITE_CATEGORY,
+        "CookieRejectedForNonSameSiteness"_ns,
+        AutoTArray<nsString, 1>{
+            NS_ConvertUTF8toUTF16(aCookieData.name()),
+        });
     return newCookie;
   }
 

netwerk/locales/en-US/necko.properties

@@ -87,3 +87,5 @@ CookieRejectedThirdParty=Cookie “%1$S” has been rejected as third-party.
 CookieRejectedNonsecureOverSecure=Cookie “%1$S” has been rejected because there is an existing “secure” cookie.
 # LOCALIZATION NOTE (CookieRejectedExpired): %1$S is the cookie name.
 CookieRejectedExpired=Cookie “%1$S” has been rejected because it is already expired.
+# LOCALIZATION NOTE (CookieRejectedForNonSameSiteness): %1$S is the cookie name.
+CookieRejectedForNonSameSiteness=Cookie “%1$S” has been rejected because it is in a cross-site context and its “SameSite” is “Lax” or “Strict”.